Interaction of the Bipyridyl Gold(III) Complex with Anions of Thiol-Containing Acids in Aqueous Solution

Мұқаба

Дәйексөз келтіру

Толық мәтін

Ашық рұқсат Ашық рұқсат
Рұқсат жабық Рұқсат берілді
Рұқсат жабық Рұқсат ақылы немесе тек жазылушылар үшін

Аннотация

The equilibria of stepwise substitution Au(bipy)
 + OH– = Au(bipy)ClOH+ + Cl– and Au(bipy)
 + 2OH– = Au(bipy)
 + 2Cl– in aqueous solution at T = 25°C and I = 0.2 M (NaCl), log β1 = 9.22, log β2 = 16.61 have been studied. For bipyridyl complexes Au(bipy)
 (X = Cl, OH) at pH 2.0 and 7.4, redox interactions with anions of thiol-containing acids (glutathione, cysteine, thiomalate) have been studied. In all cases, at the initial stage, a rapid reduction of gold(III) to gold(I) was observed with the simultaneous release of bipyridyl. A detailed analysis of UV spectra showed that the main products of gold(III) reduction are highly stable gold(I) thiolate complexes. The presence of further slower steps depends on the initial ratio of thiol to gold.

Авторлар туралы

I. Mironov

Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences

Email: imir@niic.nsc.ru
630090, Novosibirsk, Russia

V. Kharlamova

Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences

Email: imir@niic.nsc.ru
630090, Novosibirsk, Russia

J. Hu

Novosibirsk State University

Хат алмасуға жауапты Автор.
Email: imir@niic.nsc.ru
630090, Novosibirsk, Russia

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© И.В. Миронов, В.Ю. Харламова, Ц. Ху, 2023